Culvert.



-To all whom, it mag/concern.'

narran stares ATENT FFM DAVIB FRANKLIN YUUNGBLOOB, OIE SN ANTONIQ, TEXAS.

CULVERT.

inaaaea.

Be it known that I, DAVID F. YoUNeBLooD,

a citizen of the United States, residing at San Antonio,`in the county oit' Bexar and State of Texas, have invented a new and useful Culvert, of which the following is a yao specification.

The invention relates to improvements in metallic road culverts.

The object of the present inventionis to improve the construction of culverts, and to provide a sim le, eiiicient and comparatively inexpensive s be' nested and compactly arranged to enable them to be easily handled and shipped at low rates, and capable of being quickly set up in operative position and of adording a maximum 'carrying capacity and of en# abling water to iiow freely through it' without obstruction.

It lis also the object of the invention to provide a culvert othis character composed of interlockingl parts adapted to be main tained in engagement or interlocked. relation by the pressure of the earth, so that there will be no tendency of the parts tov separate when subjected to the pressure` incident `t0 its use.

With these and other objects in view, the

invention. consists. in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims-here to appended; it being understood that various changes in the. form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to with out departing from the spirit or sacrificing i the invention.

Like numerals of reference` designate corresponding parts in all the figures of the drawing.

In the accompanying drawing in which is illustrated thepreferred embodiment of the invention, the culvert comprises in its eet metal culvert, adapted tol Specification of Letters Patent. Patented Apr. 22, 1913. Application inea January 1i, 1913. Serial No. 741,548.

bottom or floor plates 2, which are smooth and fiat, may also be of any ldesired length, but a plurality of the overlapped bottom or floor plates 2 ispreferably employed.

In setting up the culvert, the bottom plates are first placed in position beginning at the lower end and working toward the u per end of the grade, where the bottom plate is provided with ya depending integral transverse flange 4, adapted to prevent longitudinal displacement and at the same time impede `the percolation of water under the culvert.

"Any number of depending transversel disl posed anges may, of course, be emp oyed.

The longitudinal side bars 3, which are then laced in" position at the side edges of the ottom plates or bars, may be of any desired length andmay either extend the ent-ire length of a. culvert, or be composed of a plurality of bars or sections overlapped, as shown in the accompanying drawing. When a plurality` of longitudinal'side bars is employed at each side of the culvert the breaking joints with the joints of the bottom plates, as clearly shown in Fig. 4 of the drawing. Each side bar, which may be constructed of any suitable material, is composed of an inner vertical flange 5, an intermediate horizontal web or tlange 6, and an outer depending flange 7, which is preferably bent downwardly and inwardly beneath the bottom plates, as clearly shown in Figs. 2 and 3 of the drawing. The depending dange when bent inwardly in this manner coperates with the intermediate flange to form an approximately U-shaped portion, which embraces the side edges of the bottom plates and interlocks the side bars with the same and prevents any tendency of the side bars to topple inwardly. Side bars 8 having outer depending vertical H'anges 9 may, of course, be employed. The depending vertical anges 9 are embedded in the ound, and they have the advantage of holding the culvert against lateral displacement and of preventing water from percolating under the culvert at the sides. Also by the derie pending flanges engaging the ground, they operate to resist any tendency of the side bars to topple inwardly. After the bottom plates and side bars have been assembled, the sheet metal arches are placed in position beginning at the upper end of the grade and are overlapped suiiiciently to interlock them, as shown in Fig. 1 of the drawing. Their side edges are placed upon the intermediate horizontal flanges of the side bars, and they lit against the outer faces of the inner vertical lian es 5, which prevent the sides of the arches om moving inwardly on the bottom plates. The lateral pressure of the earth against the arches is greater than the weight of the soil upon the top of the arch, and there is no tendency of outward movement or displacement of the sides of the arches, the only tendency of the side portions of the arches toward displacement bein inward, whereby they are maintained y against the inner vertical flanges of the side bars.

What is claimed is 1. A culvert of the class described including a bottom plate longitudinal side bars, arranged upon the bottom plate at the side edges thereof and each composed of an inner upwardlyl extending flange, an intermediate ange and an outer depending flange, and an arch having its side portions seated upon the side bars and held against inward movement by the upwardly extending flanges thereof.

2. A culvert of the class described comprising a bottom plate, longitudinal side A bars arranged at the side edges of the bottom plate and each including an inner upwardly extending ange, and an approximately U-shaped portion embracing the side edge of the' bottom` plate, and an arch seated upon the side bars and with its side portions at the outerv faces of the inner flanges, which hold the said side portions of the arches against inward movement.

i 3. culvert of the class described comprising a plurality of overlapped bottom plates, `longitudinal side bars arranged upon the side plates and composed of a plurality of separate bars or sections havin overlapped terminals breaking jointswlth the overlappedportions of the bottom plates, said side bars consisting of an inner upwardly extending Hange, an intermediate substantially horizontal flange, and an o uter depending ange, and a plurality of overlapped arches having their side portions seated upon the side bars and held against inward movement by the said upwardly extending anges.

4. A culvert of the class described comprising a plurality of overlapped bottom plates, longitudinal side bars arranged upon the side plates and composed of a plurality of separate bars or sections having Ioverlapped terminals breakin joints with the overlapped portions of t e bottom4 plates, said bars including inner vertical flanges,

intermediate horizontal anges, and outerA depending flanges bent inwardly beneath the bottom plates, and a plurality of overlapped arches having their side portions seated'upon the side bars and held againstinward movement by the said upwardly extending iianges.

5. A. culvert o f the class described includin a bottom plate provided with a termina depending transverse ange, side bars seated upon thefsides of thebottom plate, and an arch having its side Iportions supported by the said side bars and held against inward movement bythe same.,

In testimony, that I claim the foregoing as my own, I have hereto atxed my signature in the presence of two witnesses.

DAVID FRANKLIN YOUNGBLOOD. Witnesses:

' S. H. MOUNT,

W. M.C0RNET1. 

